The hidden picture is a robot!
The picture as Python
Here is the same picture stored as numbers in a Python list. The program reads each number and prints a symbol for it, so you can see the picture appear in the Python shell.
picture = [
"0000000110000000",
"0000000220000000",
"0033333333333300",
"0034333333334300",
"0033333333333300",
"0033555555553300",
"0033333333333300",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0006666666666000",
"0000500500500000",
]
symbols = " #@*o+="
for row in picture:
line = ""
for number in row:
line = line + symbols[int(number)]
print(line)When you run it, it prints:
##
@@
************
*o********o*
************
**++++++++**
************
==========
==========
==========
==========
==========
==========
==========
==========
+ + +
Squashing the picture smaller
Computers often save space with a trick called run-length encoding. Instead of storing every pixel, they count how many of the same colour are in a row. Here’s this picture written that way:
Show the run-length code
- Row 1: 7 × white, 2 × red, 7 × white
- Row 2: 7 × white, 2 × grey, 7 × white
- Row 3: 2 × white, 12 × purple, 2 × white
- Row 4: 2 × white, 1 × purple, 1 × yellow, 8 × purple, 1 × yellow, 1 × purple, 2 × white
- Row 5: 2 × white, 12 × purple, 2 × white
- Row 6: 2 × white, 2 × purple, 8 × navy, 2 × purple, 2 × white
- Row 7: 2 × white, 12 × purple, 2 × white
- Row 8: 3 × white, 10 × blue, 3 × white
- Row 9: 3 × white, 10 × blue, 3 × white
- Row 10: 3 × white, 10 × blue, 3 × white
- Row 11: 3 × white, 10 × blue, 3 × white
- Row 12: 3 × white, 10 × blue, 3 × white
- Row 13: 3 × white, 10 × blue, 3 × white
- Row 14: 3 × white, 10 × blue, 3 × white
- Row 15: 3 × white, 10 × blue, 3 × white
- Row 16: 4 × white, 1 × navy, 2 × white, 1 × navy, 2 × white, 1 × navy, 5 × white